CN203586895U - Vapor chamber evaporating and liquid-absorbing core with stepped groove-hole structure - Google Patents
Vapor chamber evaporating and liquid-absorbing core with stepped groove-hole structure Download PDFInfo
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- CN203586895U CN203586895U CN201320323351.7U CN201320323351U CN203586895U CN 203586895 U CN203586895 U CN 203586895U CN 201320323351 U CN201320323351 U CN 201320323351U CN 203586895 U CN203586895 U CN 203586895U
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Abstract
The utility model discloses a vapor chamber evaporating and liquid-absorbing core with a stepped groove-hole structure. The evaporating and liquid-absorbing core comprises an evaporation plate. Stepped grooves are distributed along the vertical and transverse array of the evaporation surface of the evaporation plate. The top of the stepped groove is provided with a rectangular opening structure, formed by fins. The producing process comprises the steps of screening substrates, and fixing the substrates after burr processing to a vice of a planing machine for smoothing; cutting the surfaces of the substrates by means of a second-order composite stepped plough to form a stepped groove array in vertical distribution, and rotating the substrates by 90 DEG in a clockwise manner; using a second order composite stepped planing cutter to process a stepped groove array in transverse distribution, with the top of each stepped groove being provided with two fins; rotating the substrates by 90 DEG in an anticlockwise manner, and squeezing the fins towards the mouth of each stepped groove by means of a ball head forming tool. The vapor chamber evaporating and liquid-absorbing core with is advantageous in that the specific surface area of the evaporation surface is increased; nucleation can be facilitated, and capillary attraction can be improved, and the porosity of the evaporation surface of the vapor chamber can be increased; pool boiling can be further reinforced.
Description
Technical field
The utility model relates to field of heat transfer, relates in particular to a kind of soaking plate evaporation liquid-sucking core with fractal groove-pore structure.
Background technology
Photoelectric field is the major fields that 21 century development in science and technology and people's living standard improve.For example, light emitting diode (Light Emitting Diode, be called for short LED) technology has energy-saving and environmental protection and the advantage such as the life-span is long, be acknowledged as the 4th generation lighting source.But heat problem is day by day serious along with the development of photoelectric field.At present, the power consumption of LED array light source has exceeded 100W, and high-power LED chip heat flow density has reached 2 × 106W/M2.If so high hot-fluid can not effectively guide, will produce fatal heat problem.
Soaking plate is phase-change heat transfer material, and its heat transfer property is high, can meet the demand of photoelectric field development.It can be close to the uniform to a large plane of isothermal by the high heat flux of one or more centrostigma thermals source rapidly, reduces rapidly its heat flow density; The structure of plane can directly directly contact with most at present photoelectric field thermals source, has reduced the overall thermal resistance of system; During work, do not need extra power to drive, and dependable performance.Soaking plate is by evaporating surface, adiabatic face, cryosurface, evaporation liquid-sucking core, condensation liquid-sucking core and working medium composition.Wherein, when guaranteeing that liquid fully refluxes, for improving heat-transfer capability, evaporation liquid sucting core structure should have strengthening wallop.
Nakayama proposed to have " groove-hole " evaporation liquid sucting core structure of strengthening boiling performance first in 1980.In prior art, can utilize the modes such as powder sintered and silk screen sintering to process capillary attraction large, the high groove-hole liquid sucting core structure of strengthening boiling performance.But these structure capillary radius are little, and flow resistance is large, easily obstruction and permeability are low.Simultaneously above add mode exists required equipment costliness, performs step complicatedly, makes and consumes the shortcomings such as money takes time and effort, and groove-pore structure shape is uncontrollable.Although, utilize the mode of machining can overcome the shortcoming of above processing mode, and groove-pore structure permeability of machining is large at present, flow resistance is little, but it is little to there is also capillary attraction, strengthening boiling performance is low, needs to adopt the defects such as different types of processing technology simultaneously.
Summary of the invention
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, and the soaking plate evaporation liquid-sucking core with fractal groove-pore structure that a kind of capillary attraction is large, heat transfer property is high is provided.
The utility model is achieved through the following technical solutions:
A kind of soaking plate evaporation liquid-sucking core with fractal groove-pore structure, comprise evaporation plate, along the vertical and horizontal array distribution of the evaporating surface of evaporation plate, have fractal groove, the groove top of fractal groove is provided with fin, between each fin, form rectangular aperture, fractal groove is comprised of multiple V font grooves.
Spacing between each fractal groove is 2.96mm～4mm; The V font ditch groove depth of the two side in fractal groove is 0.26mm～0.49mm, and the V font ditch groove depth of the bottom land in fractal groove is 0.5mm～1.3mm.
The manufacture method of the above-mentioned soaking plate evaporation liquid-sucking core with fractal groove-pore structure, following steps:
There is a soaking plate evaporation liquid-sucking core manufacture method for fractal groove-pore structure, following steps:
Step 1: screen a substrate, burr processing is carried out in its surface, be then fixed on the vice of planer with fixture, utilize lever indicator to smooth substrate surface to be processed;
Step 2: at the second order composite fractal plough cutter for surface of substrate, process the fractal groove array of longitudinal distribution;
Step 3: complete after the fractal groove array of longitudinal distribution, substrate is turned clockwise to 90 °, process the fractal groove array of cross direction profiles with second order composite fractal Knife for stripping cable;
Step 4: process after the fractal groove array of cross direction profiles, the groove top of each fractal groove just forms two fins, now substrate is rotated counterclockwise to 90 °, with bulb forming-tool, the notch direction extruding towards each fractal groove by this fin, forms rectangular slot;
Step 5: last deburring, cleaning, obtain having the soaking plate evaporation liquid-sucking core of fractal groove structure.
The utility model compared with prior art under, at least tool has the following advantages and effect:
(1) the vertical and horizontal array distribution of the evaporating surface of evaporation plate has fractal groove, and the groove top of fractal groove is provided with the fin that can strengthen boiling, and this structure has increased the specific area of soaking plate evaporating surface greatly;
In fractal groove, by multiple V font grooves, formed, be conducive to nucleation and improve capillary attraction, and its poor wetability is conducive to the escape of bubble;
The groove top of fractal groove is provided with fin, forms the rectangular slot of semiclosed rectangular aperture between each fin, has improved the porosity of soaking plate evaporating surface, and more bubble nucleating condition is provided, and can further play strengthening boiling and not susceptible to plugging multiple action.
The soaking plate that said structure forms can be widely used in the cooling heat dissipation of semiconductor light-emitting-diode, semiconductor laser and thermo-optical electrical switching device, central processing unit (CPU) (CPU), graphic process unit chip (GPU) and computer high-frequency temporary storage (internal memory).
Between each fin, form the rectangular slot of semiclosed rectangular aperture, only need common planer just can complete whole process, the means that possess skills are simple and easy to do, the advantages such as equipment cost input is low, environmental protection.
Accompanying drawing explanation
Fig. 1 is the soaking plate evaporation liquid sucting core structure schematic diagram that the utlity model has fractal groove-pore structure.
Fig. 2 adopts second order composite fractal plough cutter, processes the process schematic diagram of the fractal groove of longitudinal array distribution.
Fig. 3 adopts second order composite fractal Knife for stripping cable, the process schematic diagram of the fractal groove of cross machine array distribution.
Fig. 4 be adopt bulb forming-tool by this fin the notch direction extrusion process schematic diagram towards each fractal groove.
Fig. 5 is the head construction schematic diagram of second order composite fractal Knife for stripping cable.
Fig. 6 is the head construction schematic diagram of bulb forming-tool.
Fig. 7 is the head construction schematic diagram of second order composite fractal plough cutter.
The specific embodiment
Below in conjunction with specific embodiment, the utility model is more specifically described in detail.
Embodiment
As shown in Figure 1.The utlity model has the soaking plate evaporation liquid-sucking core of fractal groove-pore structure, comprise evaporation plate 3, vertical and horizontal array distribution along the evaporating surface of evaporation plate has fractal groove 1, the groove top of fractal groove is provided with fin 2, between each fin, form rectangular aperture (rectangular slot 1-1), fractal groove 1 is comprised of multiple V font grooves.Spacing between each fractal groove 1 is 2.96mm～4mm; The V font ditch groove depth of the two side in fractal groove 1 is 0.26mm～0.49mm, and the V font ditch groove depth of the bottom land in fractal groove 1 is 0.5mm～1.3mm.
As shown in Figure 2 to 7.The making method of the above-mentioned soaking plate evaporation liquid-sucking core with fractal groove-pore structure, can realize by following step:
Step 1: screen a substrate, burr processing is carried out in its surface, be then fixed on the vice of planer with fixture, utilize lever indicator to smooth substrate surface to be processed;
Step 2 (as shown in Fig. 2, Fig. 7): at the second order composite fractal plough cutter 4 for surface of substrate, process the fractal groove array of longitudinal distribution;
Step 3 (as shown in Fig. 3, Fig. 5): complete after the fractal groove array of longitudinal distribution, substrate is turned clockwise to 90 °, process the fractal groove array of cross direction profiles with second order composite fractal Knife for stripping cable 6; Employing mode control is manually or automatically with the spacing between the fractal groove of array.
Step 4 (as shown in Fig. 4, Fig. 6): process after the fractal groove array of cross direction profiles, the groove top of each fractal groove just forms two fins 2, now substrate is rotated counterclockwise to 90 °, with bulb forming-tool 5, the notch direction extruding towards each fractal groove by this fin, forms rectangular slot 1-1; Adopt the mode control amount of feeding manually or automatically.
Step 5: last deburring, cleaning, obtain having the soaking plate evaporation liquid-sucking core of fractal groove-pore structure.
Two cutter head shapes of second order composite fractal Knife for stripping cable 6 as shown in Figure 5, the cutter head shape of bulb forming-tool 5 as shown in Figure 6, the head construction of second order composite fractal plough cutter 4 as shown in Figure 7, the conventional techniques means processing such as the grinding of knowing according to those of ordinary skills, line cutting can make.
The vertical and horizontal array distribution of the evaporating surface of above-mentioned evaporation plate has fractal groove 1, and the groove top of fractal groove is provided with the fin 2 that can strengthen boiling, and this structure has increased the specific area of soaking plate evaporating surface greatly.
In fractal groove 1, by multiple V font grooves, formed, be conducive to nucleation and improve capillary attraction, and its poor wetability is conducive to the escape of bubble.
As Fig. 1.The groove of fractal groove pushes up between the fin that is provided with and fin and forms rectangular slot 1-1, has improved the porosity of soaking plate evaporating surface, and more bubble nucleating condition is provided, and can further play the effect of strengthening boiling.
From Fig. 1 (in conjunction with Fig. 3), can find out.The fin 2 on the fractal groove 1 of vertical and horizontal array distribution and groove top, between its fin and fin, be the rectangular slot 1-1 that forms semi-enclosed rectangular aperture shape, fractal groove 1 is also semi-open and Full-open structure, this structure is difficult for stopping up, strengthening boiling effect is better, can be widely used in the cooling heat dissipation of semiconductor light-emitting-diode, semiconductor laser and thermo-optical electrical switching device, central processing unit (CPU) (CPU), graphic process unit chip (GPU) and computer high-frequency temporary storage (internal memory).
As mentioned above, just can realize preferably the utility model.
Embodiment of the present utility model is not restricted to the described embodiments; other are any does not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitute, combination, simplify; all should be equivalent substitute mode, within being included in protection domain of the present utility model.
Claims (2)
1. one kind has the soaking plate evaporation liquid-sucking core of fractal groove-pore structure, comprise evaporation plate, it is characterized in that: the vertical and horizontal array distribution along the evaporating surface of evaporation plate has fractal groove, the groove top of fractal groove is provided with fin, between each fin, form rectangular aperture, fractal groove is comprised of multiple V font grooves.
2. the soaking plate evaporation liquid-sucking core with fractal groove-pore structure according to claim 1, is characterized in that: the spacing between each fractal groove is 2.96mm ~ 4mm; The V font ditch groove depth of the two side in fractal groove is 0.26mm ~ 0.49mm, and the V font ditch groove depth of the bottom land in fractal groove is 0.5mm ~ 1.3mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320323351.7U CN203586895U (en) | 2013-06-05 | 2013-06-05 | Vapor chamber evaporating and liquid-absorbing core with stepped groove-hole structure |
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| CN201320323351.7U CN203586895U (en) | 2013-06-05 | 2013-06-05 | Vapor chamber evaporating and liquid-absorbing core with stepped groove-hole structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344142A (en) * | 2013-06-05 | 2013-10-09 | 华南理工大学 | Vapour chamber evaporation imbibition core of fractal groove-hole structure and manufacturing method |
| PL425053A1 (en) * | 2018-03-28 | 2019-10-07 | Politechnika Wrocławska | Method for production of a structure intensifying heat exchange during boiling and the structure intensifying heat exchange during boiling |
| WO2020155901A1 (en) * | 2019-01-29 | 2020-08-06 | 株洲智热技术有限公司 | Boiling enhancement apparatus |
-
2013
- 2013-06-05 CN CN201320323351.7U patent/CN203586895U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344142A (en) * | 2013-06-05 | 2013-10-09 | 华南理工大学 | Vapour chamber evaporation imbibition core of fractal groove-hole structure and manufacturing method |
| CN103344142B (en) * | 2013-06-05 | 2015-06-03 | 华南理工大学 | Vapour chamber evaporation imbibition core of fractal groove-hole structure and manufacturing method |
| PL425053A1 (en) * | 2018-03-28 | 2019-10-07 | Politechnika Wrocławska | Method for production of a structure intensifying heat exchange during boiling and the structure intensifying heat exchange during boiling |
| WO2020155901A1 (en) * | 2019-01-29 | 2020-08-06 | 株洲智热技术有限公司 | Boiling enhancement apparatus |
| US12085344B2 (en) | 2019-01-29 | 2024-09-10 | Smarth Technology Ltd. | Boiling enhancement device |
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Granted publication date: 20140507 Termination date: 20170605 |
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| CF01 | Termination of patent right due to non-payment of annual fee |